CN101698924B - Steel shot used for cleaning and strengthening surface of metal and preparation method thereof - Google Patents
Steel shot used for cleaning and strengthening surface of metal and preparation method thereof Download PDFInfo
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- CN101698924B CN101698924B CN200910196797A CN200910196797A CN101698924B CN 101698924 B CN101698924 B CN 101698924B CN 200910196797 A CN200910196797 A CN 200910196797A CN 200910196797 A CN200910196797 A CN 200910196797A CN 101698924 B CN101698924 B CN 101698924B
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Abstract
The invention discloses a steel shot used for cleaning and strengthening the surface of metal, which is characterized by comprising the following components by weight percent: 0.7-0.75% of carbon, 0.7-0.8% of manganese, 0.2-0.3% of silicon, 0.01-0.02% of sulfur and 0.01-0.02% of phosphorus, wherein the weight percent of iron is replenished to 100%. The invention also provides a preparation method of the steel shot used for cleaning and strengthening the surface of the metal. The invention overcomes the defects of short service life, large hardness bias, low impact resistance and the like of the prior steel shot and provides the steel shot used for cleaning and strengthening the surface of the metal; the steel shot has very good durability, and the service life of the steel shot is obviously higher than that of the prior art; the steel shot has high uniformity of element proportion, high density, smaller hardness bias, high uniformity of particle size and moderate surface strength and is especially suitable for the surface processing of a high-grade workpiece; and the phenomena of hollowness and surface or recessive crack can not occur, and the steel shot has small surface shape difference.
Description
Technical field
The present invention relates to a kind of metal product and preparation method thereof, especially a kind of shot that is used for metallic surface finishing and reinforcement and preparation method thereof.
Background technology
China is product such as production and cleaning shot that uses or reinforced steel shot at present, and its production technique mainly contains two kinds: the one, after dissolving the refining steel scrap, add necessarily other composition again, and molten steel is atomized or the centrifugation granulation; The 2nd, reclaim social waste steel wire (in mining machinery, oil field equipment and the junked tire), carry out segment.By the shot of this dual mode gained, its major defect is that element ratio is wayward, and the hardness deviation is big.Simultaneously, the density of shot, surface shape deviation are also very big, and this type shot also is easy to generate phenomenons such as hollow and crizzle.Therefore this type shot product is in ball blast or shot-peening process, and shock-resistance and rub resistance are low, and broken easily, work-ing life is short.During especially for the impeller blasting of High Strength Steel and intensified process; As be used for industry metal finishing such as aircraft manufacturing, aerospace, automobile, motorcycle, shipbuilding, gearing, spring manufacturing; Shortcoming is particularly outstanding, can't satisfy change the workpiece surface stressed condition, make workpiece surface cleaning zone of oxidation and sclerosis, processing requirements such as the wear resistance of raising part and fatigue resistance.
Disclose a kind of reinforced steel shot among patent CN 101337338 A, test data fatigue lifetime of its 0.4 millimeter～1.2 millimeters shot is 3000～4900 commentaries on classics.
Summary of the invention
Technical problem to be solved by this invention has been to overcome short, defective such as the hardness deviation is big, shock-resistance is low in the existing shot work-ing life that is used for metallic surface finishing and reinforcement, provides that a kind of wear resistance is good, long service life, surface strength is moderate, the particle size consistence high, the hardness deviation is little and be applicable to high-end workpiece surface cleaning and shot of strengthening and preparation method thereof.
The present invention solves the problems of the technologies described above through following technical proposals:
The shot that is used for metallic surface finishing and reinforcement of the present invention comprises following component: carbon 0.7-0.75%, and manganese 0.7-0.8%, silicon 0.2-0.3%, sulphur 0.01-0.02% and phosphorus 0.01-0.02%, iron is supplied weight percent to 100%.
In the present invention's one preferred embodiment, the described shot that is used for metallic surface finishing and reinforcement is made up of following component: carbon 0.7-0.75%, and manganese 0.7-0.8%, silicon 0.2-0.3%, sulphur 0.01-0.02% and phosphorus 0.01-0.02%, surplus is an iron; Per-cent is weight percentage.
According to this area general knowledge, the shot that is used for metallic surface finishing and reinforcement of the present invention contains impurity inevitably.
Described Vickers (HV) average hardness that is used for measuring under the shot load of metallic surface finishing and reinforcement is essentially 510 ± 30HV.
The described shot hardness deviation range that is used for metallic surface finishing and reinforcement is essentially ± 25HV.
The described minimum density that is used for the shot of metallic surface finishing and reinforcement restrains basically >=7.8/and every cubic centimetre.
The described particle size deviation that is used for the shot of metallic surface finishing and reinforcement is essentially ± and 0.02 millimeter.
The described shot that is used for metallic surface finishing and reinforcement is generally cylindrical-CW; Ellipse-G1; Torispherical-G2 or sphere-G3.
The shot that is used for metallic surface finishing and reinforcement of the present invention is mainly used in the ball blast and the shot-peening (Blasting and Shot Peening) of metal finishing, can play the function of cleaning metallic surface and metal-surface strengthening simultaneously.
The present invention also provides the said preparation method who is used for the shot of metallic surface finishing and reinforcement, and it comprises following process step:
(1) with component and the consistent steel of shot that are used for metallic surface finishing and reinforcement of the present invention, cold drawing, pickling, thermal treatment, wire drawing, cutting;
(2) screening promptly gets; Or through surperficial rounding reinforcement, screening, the shape choosing promptly gets.
Wherein, Described component comprises following component with the consistent steel of shot that are used for metallic surface finishing and reinforcement of the present invention: carbon 0.7-0.75%, manganese 0.7-0.8%, silicon 0.2-0.3%; Sulphur 0.01-0.02% and phosphorus 0.01-0.02%, iron is supplied weight percent to 100%.Preferably, described component is made up of following component with the consistent steel of shot that are used for metallic surface finishing and reinforcement of the present invention: carbon 0.7-0.75%, and manganese 0.7-0.8%, silicon 0.2-0.3%, sulphur 0.01-0.02% and phosphorus 0.01-0.02%, surplus is an iron; Per-cent is weight percentage.
What wherein, described steel were preferable is through cold rolling or hot rolled wire rod or wire rod.
Wherein, described cold drawing is carried out with reference to the conventional cold drawing method in this area, preferably repeats the 3-5 road.
Wherein, described pickling is carried out with reference to the conventional acid washing method in this area.
Wherein, described thermal treatment is carried out with reference to the conventional heat treating method in this area, and preferable is vacuum isothermal annealing thermal treatment, thereby the intensity of reduction wire rod or wire rod is unlikely to fracture of wire in drawing process.
Wherein, described wire drawing is carried out with reference to the conventional drawing process in this area, preferably is according to the product specification requirement, passes through the cold drawing in 5-15 road again, pulls into the steel wire of size between the 0.3-2.0 millimeter.
Wherein, described cutting is carried out with reference to the conventional cutting method in this area, preferably steel wire is cut into the right cylinder consistent with diameter.
Wherein, described surperficial rounding is strengthened the surperficial rounding enhancement method that adopts this area conventional, with the rounding strengthening device to right cylinder segment clash into rounding and surface hardness improved, reach the reinforcement result of raising hardness.
Wherein, the conventional shape choosing method in this area is adopted in described shape choosing, uses the shape optional equipment, and the reinforced steel shot after the screening is carried out the selection of shape.
Wherein, described screening preferably according to the dimensions requirement of said shot, is carried out 2-3 screening with reference to the conventional method for sieving in this area.
Preferably, the shot that is used for metallic surface finishing and reinforcement that makes in the above-mentioned steps is detected back packing warehouse-in.
Wherein, described detection is generally one or more in detecting hardness, density and fatigue lifetime.
Among the present invention, but above-mentioned optimum condition arbitrary combination promptly gets each preferred embodiments of the present invention.
Raw material of the present invention and reagent are all commercially available to be got.
Positive progressive effect of the present invention is:
1, the shot that is used for metallic surface finishing and reinforcement of the present invention has good weather resistance, and work-ing life is apparently higher than prior art 16-25%.
2, shot employing elementary composition ratio cold rolling or hot rolling wire or the wire rod consistent with the shot that is used for metallic surface finishing and reinforcement that is used for metallic surface finishing and reinforcement of the present invention is that raw material production forms; Therefore the element ratio consistence of shot that is used for metallic surface finishing and reinforcement is high, density is high, the hardness deviation ratio is less, particle size consistence height, surface strength are moderate, is specially adapted to the surface treatment of high-end workpiece.
3, the shot that is used for metallic surface finishing and reinforcement that obtains through preparing method's production of the present invention can not occur hollow, and surface or recessive seminess, the surface shape high conformity.
Embodiment
Further specify the present invention with embodiment below, but the present invention is not limited.
The shot that is used for metallic surface finishing and reinforcement can be divided into four types according to shape:
Cylindrical-CW; Ellipse-G1; Torispherical-G2; Sphere-G3.
The method of sieving among the following embodiment is tested shot 1000 grams that are used for metallic surface finishing and reinforcement for the balance that is not less than 0.1 gram with weighing precision weighs up; Be placed on then in the first layer screen cloth and sieve; Collection remains in the shot that is used for metallic surface finishing and reinforcement on the screen cloth, and poidometer is calculated the per-cent that accounts for gross sample weight; And then the shot that is used for metallic surface finishing and reinforcement that the first layer screen cloth passes through is put into second layer screen cloth sieve, to collect and remain in the shot that is used for metallic surface finishing and reinforcement on the second layer screen cloth, poidometer is calculated the per-cent that accounts for gross sample weight; And then the shot that is used for metallic surface finishing and reinforcement that second layer screen cloth passes through is put into the 3rd layer of screen cloth sieve, to collect and remain in the 3rd layer of shot that is used for metallic surface finishing and reinforcement on the screen cloth, poidometer is calculated the per-cent that accounts for gross sample weight; Collect the 3rd layer of shot that is used for metallic surface finishing and reinforcement that passes through at last, poidometer is calculated the per-cent that accounts for gross sample weight, promptly draws the distribution of sizes ratio.Whole test process can be placed on the last property testing of three sieve eclipsed vibratory screening apparatuss.
(1) the first layer screen cloth: mesh size is specified size+0.1 millimeter that is used for the shot of metallic surface finishing and reinforcement;
(2) second layer screen cloth: mesh size is the specified size that is used for the shot of metallic surface finishing and reinforcement, i.e. specified size ± 0.0 millimeter;
(3) the 3rd layers of screen cloth: mesh size is the specified size-0.1 millimeter that is used for the shot of metallic surface finishing and reinforcement;
(4) pill amplifies 25 times of range estimations, removes the irregular product of surface shape, disqualification rate≤0.3%.
For example: the distribution of sizes ratio of measuring specified size and be 1.0 millimeters shots that are used for metallic surface finishing and reinforcement is with three of standard screen clothes; The first layer mesh size is 1.1 millimeters; Second layer mesh size is 1.0 millimeters, and the 3rd layer of mesh size is 0.9 millimeter, and the atresia container is put in the bottom.
The residual rate of first, second and third layer screen cloth and the testing method of percent of pass are:
The residual rate of X sieve: after the screening of X screen cloth, stay the per-cent that residual volume on the X screen cloth accounts for gross sample weight.
Last percent of pass: after three layers of screen cloth screening, the residual volume that is gone down by screening at last accounts for the per-cent of gross sample weight.
The method that hardness detects is: get 50 shots that are used for metallic surface finishing and reinforcement at random; Carry out the cold sample preparation piece of inlaying, be milled to 1/3rd places of shot nominal diameter then with the grinding and polishing machine, then polishing; Polished surface is with 3% nital wiping; Choose from the polished surface of handling well and to be not less than 20 shots that are used for metallic surface finishing and reinforcement, according to its Vickers' hardness of GB/T 4340.1-1999 standard testing, the load of 0.3 millimeter of diameter and the following shot that is used for metallic surface finishing and reinforcement is 4.9035N (HV0.5); 0.4-2.0 the shot load that is used for metallic surface finishing and reinforcement of millimeter is 9.807N (HV1); Each shot that is used for metallic surface finishing and reinforcement detects once, gets the arithmetic mean value after 20 hardness value additions, and its any test value must be in the durometer level of regulation.
Method for testing fatigue life:
Data fatigue lifetime among all embodiment of the present invention have all adopted art-recognized, and the test of authority's method obtains the most.
Concrete testing method is: randomly draw 220 gram shots, from 220 grams, take out 100 gram shots again, 100 gram shots are all put into the Ervin trier test.Per 250 circles of Ervin trier are a circulation.Filter out shot and dust with standard sieve after each round-robin test less than mesh size; Replenish the shot weight of its loss with subsequent use shot; And the like continue round-robin test, the shot weight of in last circulation, losing accumulative total reaches and surpasses 100 grams, stops to test; The shot weight of recording loss and accumulating losses weight calculate number of turns fatigue lifetime (stagnation point fatigue lifetime) that the test number of turns is shot.Wherein, the mesh size of standard sieve is selected according to shot abrasive material size, and choice criteria is as described in Table 1.For example, when shot is of a size of 0.4mm-0.3mm, and hardness is when being 480-540HV, and selecting the mesh diameter for use is the standard sieve of 0.18mm; When shot was of a size of 2.0mm-1.0mm, selecting the mesh diameter for use was the standard sieve of 0.43mm.
Table 1 touchstone
| Shot abrasive material size | HV/HRC hardness | Each test run number of times | Mesh size |
| 2.0mm-1.0mm | 480-540HV/48-52HRC | 250 | 0.0165 inch/0.43mm |
| 0.9mm-0.5mm | 480-540HV/48-52HRC | 250 | 0.0117 inch/0.3mm |
| 0.4mm-0.3mm | 480-540HV/48-52HRC | 250 | 0.0070 inch/0.18mm |
Fatigue lifetime, the concrete calculation formula of the number of turns was:
Fatigue lifetime the number of turns=total degree-number of times/last the bodies lost weight of test run (each) (accumulating losses weight-100 gram).The number of times that recycles is high more, shows that work-ing life is long more.
Illustrate: a certain shot is carried out test fatigue lifetime, behind each circulation 250 circles, write down the bodies lost weight and the accumulating losses weight of this time respectively.With table 2 is example, and accumulating losses weight has surpassed 100 grams when shot accumulative total is recycled to 1500 circles, then stops test.Because last 250 circle bodies lost weight are 17.6 grams, so be its work-ing life: 1500-(250/17.6) (104.5-100)=1436 time recycles the life-span.
Table 2
| Cumulative frequency | Bodies lost weight (gram) | Accumulating losses weight (gram) |
| 250 | 7.0 | 7.0 |
| 500 | 16.9 | 23.9 |
| 750 | 21.5 | 45.4 |
| 1,000 | 21.9 | 67.3 |
| 1,250 | 19.6 | 86.9 |
| 1,500 | 17.6 | 104.5 |
The method that the surface rounding is strengthened is: the initial velocity impelling of right cylinder segment with the 70-100 meter per second gone out, through the distance back percussion device backplate of 0.3-0.5 rice, strengthen shape and hardness according to the difference control of clashing into enhanced time repeatedly.
Strengthening the concrete time is: CW-0 minute; G1-30-50 minute; G2-50-80 minute; G3-80-100 minute.
Among following each embodiment, except that other have explanation, described per-cent is all weight percent.
Embodiment 1
Raw material: the elemental composition ratio consists of carbon 0.7% by weight percentage in the wire rod, manganese 0.75%, and silicon 0.2%, sulphur 0.015% and phosphorus 0.02%, iron is supplied weight percent to 100%.
The preparation method:
1, requires to select materials according to above-mentioned raw materials,, embathe and twice vacuum isothermal annealing thermal treatment, get process wire through weak sulfuric acid with wire rod cold drawing 3 roads;
2, wire drawing: pass through the cold drawn of 5-15 road, pull into the steel wire of different diameter between the 0.3-2.0 millimeter; Its durometer level is HV480 ± 25HV.
3, cutting: with filament cutter steel wire is cut into the right cylinder segment consistent with diameter, the shearing section requires smooth, no burr, does not have hangover.
4, screening: the specified size for different shots sieves.The specified size of screening is the 0.3-2.0 millimeter.
5, carrying out hardness, density and fatigue lifetime detects.
The columniform components by weight that is used for the shot of metallic surface finishing and reinforcement that makes thus is: carbon 0.7%, and manganese 0.75%, silicon 0.2%, sulphur 0.015% and phosphorus 0.02%, iron is supplied weight percent to 100%.
The distribution of sizes ratio data that is used for the shot of metallic surface finishing and reinforcement is seen table 3, and the last percent of pass of shot is≤0.6%.The standard specified size scope that is used for the shot of metallic surface finishing and reinforcement: 0.30-2.00 millimeter.The hardness level and the durometer level that are used for the shot of metallic surface finishing and reinforcement are seen table 4, and performance data is seen table 5.
Table 3
Table 4
| The shot grade (0.3mm-2.0mm) that is used for metallic surface finishing and reinforcement | Standard hardness | The hardness deviation |
| 510 grades | 510HV | HV480-540 |
Table 5
Can be known that by table 5 the shot size is big more, work-ing life is short more.In the disclosed shot size range of prior art, at least improved 16-23% with respect to prior art the work-ing life that is used for the shot of metallic surface finishing and reinforcement of the present invention.When the shot that is used for metallic surface finishing and reinforcement in the present embodiment is of a size of 1.6 millimeters, lost efficacy and still can reach 3600 commentaries on classics fatigue lifetime; When being of a size of 2.0 millimeters, can reach 3100 changes.And among the patent CN 101337338A, when shot was of a size of 1.2 millimeters, the life-span is merely 3000 changeed.The shot that is used for metallic surface finishing and reinforcement of the present invention is described thus compared with prior art, be significantly improved work-ing life.Size deviation, the hardness deviation of the shot that is used for metallic surface finishing and reinforcement that makes among the embodiment 1 are all very little.Amplify observation through naked eyes or microscope, the shot surface does not have seminess, and surface shape difference is little.The shot that is used for metallic surface finishing and reinforcement that the back confirmation of weighing makes all is solid, does not have hollow phenomenon.
Embodiment 2
Raw material: the elemental composition ratio consists of carbon 0.75% by weight percentage in the wire rod, manganese 0.7%, and silicon 0.25%, sulphur 0.02% and phosphorus 0.015%, iron is supplied weight percent to 100%.
The preparation method:
1, requires to select materials according to above-mentioned raw materials,, embathe and twice vacuum isothermal annealing thermal treatment, get process wire through weak sulfuric acid with wire rod cold drawing 5 roads;
2, wire drawing: pass through the cold drawn of 5-15 road, pull into the steel wire of different diameter between the 0.3-2.0 millimeter; Its durometer level is HV480 ± 25HV.
3, cutting: with filament cutter steel wire is cut into the right cylinder segment consistent with diameter, the shearing section requires smooth, no burr, does not have hangover.
4, surperficial rounding is strengthened the back screening: the specified size for different shots sieves.The specified size of screening is the 0.3-2.0 millimeter.
5, carry out hardness, density and fatigue lifetime after the shape choosing and detect, the packing warehouse-in.
Make the shot that is used for metallic surface finishing and reinforcement of CW, G1, G2 and four kinds of shapes of G3 thus.The components by weight that is used for the shot of metallic surface finishing and reinforcement is: carbon 0.75%, and manganese 0.7%, silicon 0.25%, sulphur 0.02% and phosphorus 0.015%, iron is supplied weight percent to 100%.
The distribution of sizes ratio data that is used for the shot of metallic surface finishing and reinforcement is seen table 6, and the last percent of pass of shot is: CW≤0.6%, G1≤0.5%, G2≤0.5%, G3≤0.5%.The standard specified size scope that is used for the shot of metallic surface finishing and reinforcement: 0.30-2.0 millimeter.The hardness level and the durometer level that are used for the shot of metallic surface finishing and reinforcement are seen table 7, and performance data is seen table 8.
Table 6
Table 7
Table 8
Can be known that by table 8 the shot size is big more, work-ing life is short more.In the disclosed shot size range of prior art, at least improved 16-20% with respect to prior art the work-ing life that is used for the shot of metallic surface finishing and reinforcement of the present invention.When the shot that is used for metallic surface finishing and reinforcement in the present embodiment is of a size of 1.6 millimeters, lost efficacy and still can reach 3600 commentaries on classics fatigue lifetime; When being of a size of 2.0 millimeters, can reach 3000 changes.And among patent CN 101337338 A, when shot was of a size of 1.2 millimeters, the life-span is merely 3000 changeed.The shot that is used for metallic surface finishing and reinforcement of the present invention is described thus compared with prior art, be significantly improved work-ing life.Size deviation, the hardness deviation of the shot that is used for metallic surface finishing and reinforcement that makes among the embodiment 2 are all very little.Amplify observation through naked eyes or microscope, the shot surface does not have seminess, and surface shape difference is little.The shot that is used for metallic surface finishing and reinforcement that the back confirmation of weighing makes all is solid, does not have hollow phenomenon.
Embodiment 3
Raw material: the elemental composition ratio consists of carbon 0.72% by weight percentage in the wire rod, manganese 0.8%, and silicon 0.3%, sulphur 0.01% and phosphorus 0.01%, iron is supplied weight percent to 100%.
The preparation method is with embodiment 2.
Make the shot that is used for metallic surface finishing and reinforcement of CW, G1, G2 and four kinds of shapes of G3 thus.The components by weight that is used for the shot of metallic surface finishing and reinforcement is: carbon 0.72%, and manganese 0.8%, silicon 0.3%, sulphur 0.01% and phosphorus 0.01%, iron is supplied weight percent to 100%.
The distribution of sizes ratio data of shot that is used for metallic surface finishing and reinforcement is with table 6, and the last percent of pass of shot is: CW≤0.6%, G1≤0.5%, G2≤0.5%, G3≤0.5%.The standard specified size scope that is used for metallic surface finishing and reinforced steel shot: 0.30-2.00 millimeter.The hardness level and the durometer level that are used for metallic surface finishing and reinforced steel shot are with table 7, and performance data is seen table 9.
Table 9
Can be known that by table 9 the shot size is big more, work-ing life is short more.In the disclosed shot size range of prior art, at least improved 18-25% with respect to prior art the work-ing life that is used for the shot of metallic surface finishing and reinforcement of the present invention.When the shot that is used for metallic surface finishing and reinforcement in the present embodiment is of a size of 1.6 millimeters, lost efficacy and still can reach 3800 commentaries on classics fatigue lifetime; When being of a size of 2.0 millimeters, be 3200 commentaries on classics.And among patent CN 101337338 A, when shot was of a size of 1.2 millimeters, the life-span is merely 3000 changeed.The shot that is used for metallic surface finishing and reinforcement of the present invention is described thus compared with prior art, be significantly improved work-ing life.Size deviation, the hardness deviation of the shot that is used for metallic surface finishing and reinforcement that makes among the embodiment 3 are all very little.Amplify observation through naked eyes or microscope, the shot surface does not have seminess, and surface shape difference is little.The shot that is used for metallic surface finishing and reinforcement that the back confirmation of weighing makes all is solid, does not have hollow phenomenon.
Claims (9)
1. shot that is used for metallic surface finishing and reinforcement; It is characterized in that: the described shot that is used for metallic surface finishing and reinforcement is made up of following component: carbon 0.7-0.75%, manganese 0.7-0.8%, silicon 0.2-0.3%; Sulphur 0.01-0.02% and phosphorus 0.01-0.02%, surplus is an iron; Per-cent is weight percentage; Said shot prepares by following step: the steel that (1) is consistent with said shot with component, cold drawing, pickling, thermal treatment, wire drawing, cutting; (2) screening promptly gets; Or through surperficial rounding reinforcement, screening, the shape choosing promptly gets.
2. the shot that is used for metallic surface finishing and reinforcement as claimed in claim 1 is characterized in that: the described Vickers average hardness that is used for the shot of metallic surface finishing and reinforcement is 510HV ± 30HV.
3. the shot that is used for metallic surface finishing and reinforcement as claimed in claim 1 is characterized in that: the described hardness deviation range that is used for the shot of metallic surface finishing and reinforcement is ± 25HV.
4. the shot that is used for metallic surface finishing and reinforcement as claimed in claim 1 is characterized in that: the described minimum density that is used for the shot of metallic surface finishing and reinforcement is >=7.8 gram/cubic centimetres.
5. the shot that is used for metallic surface finishing and reinforcement as claimed in claim 1 is characterized in that: the described particle size deviation that is used for the shot of metallic surface finishing and reinforcement is ± 0.02 millimeter.
6. the described preparation method who is used for the shot of metallic surface finishing and reinforcement of claim 1, it comprises following process step: (1) is with the consistent steel of the shot that is used for metallic surface finishing and reinforcement in component and the claim 1, cold drawing; Pickling; Thermal treatment, wire drawing, cutting;
(2) screening promptly gets; Or through surperficial rounding reinforcement, screening, the shape choosing promptly gets.
7. the preparation method who is used for the shot of metallic surface finishing and reinforcement as claimed in claim 6 is characterized in that: described steel are through cold rolling or hot rolled wire rod or wire rod; Described cold drawing repeats the 3-5 road; Described thermal treatment is vacuum isothermal annealing thermal treatment; Described wire drawing pulls into the steel wire of size between the 0.3-2.0 millimeter for passing through the cold drawing in 5-15 road again; Described being cut into cuts into the right cylinder consistent with diameter with steel wire; The number of times of described screening is 2-3 time.
8. like claim 6 or the 7 described preparing methods that are used for the shot of metallic surface finishing and reinforcement, it is characterized in that: the shot that is used for metallic surface finishing and reinforcement that obtains in the step (2) is detected back packing warehouse-in.
9. the preparation method who is used for the shot of metallic surface finishing and reinforcement as claimed in claim 8 is characterized in that: described detection is one or more in detecting hardness, density and fatigue lifetime.
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| CN200910196797A CN101698924B (en) | 2009-09-29 | 2009-09-29 | Steel shot used for cleaning and strengthening surface of metal and preparation method thereof |
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| CN200910196797A CN101698924B (en) | 2009-09-29 | 2009-09-29 | Steel shot used for cleaning and strengthening surface of metal and preparation method thereof |
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| CN102642177A (en) * | 2012-05-04 | 2012-08-22 | 大连理工大学 | Processing method of alloy surface micro-cracks |
| CN104550307B (en) * | 2013-10-22 | 2017-05-03 | 殷国忠 | Manufacturing method of high-density anti-oxidation red copper fibers |
| CN103978131A (en) * | 2014-05-05 | 2014-08-13 | 凌源市龙源资源回收利用有限公司 | Preparation method for high-performance steel shots |
| CN107815595A (en) * | 2017-11-13 | 2018-03-20 | 江苏奥力斯特科技有限公司 | A kind of alloy balls for walking wheel of coal cutter surface peening |
| CN109988974A (en) * | 2019-04-17 | 2019-07-09 | 昆山新浦瑞金属材料有限公司 | Shot and preparation method thereof for metallic surface finishing |
| CN114770049B (en) * | 2022-05-13 | 2023-12-15 | 无锡华美新材料有限公司 | Manufacturing method of superhard template for manufacturing 5G communication PCB |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337338A (en) * | 2008-05-30 | 2009-01-07 | 大丰市大奇金属磨料有限公司 | Strengthened steel pill |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337338A (en) * | 2008-05-30 | 2009-01-07 | 大丰市大奇金属磨料有限公司 | Strengthened steel pill |
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